CN115579597B - Energy storage device and electric equipment - Google Patents
Energy storage device and electric equipment Download PDFInfo
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- CN115579597B CN115579597B CN202211414921.3A CN202211414921A CN115579597B CN 115579597 B CN115579597 B CN 115579597B CN 202211414921 A CN202211414921 A CN 202211414921A CN 115579597 B CN115579597 B CN 115579597B
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- 238000004146 energy storage Methods 0.000 title claims description 64
- 239000003792 electrolyte Substances 0.000 claims abstract description 169
- 238000002347 injection Methods 0.000 claims abstract description 17
- 239000007924 injection Substances 0.000 claims abstract description 17
- 239000007788 liquid Substances 0.000 claims abstract description 14
- 230000007704 transition Effects 0.000 claims description 44
- 238000009413 insulation Methods 0.000 claims description 43
- 230000003014 reinforcing effect Effects 0.000 claims description 19
- 238000003466 welding Methods 0.000 description 37
- 230000015572 biosynthetic process Effects 0.000 description 12
- 230000000694 effects Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000007373 indentation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000002893 slag Substances 0.000 description 3
- 241000251468 Actinopterygii Species 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 238000009736 wetting Methods 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
- H01M50/609—Arrangements or processes for filling with liquid, e.g. electrolytes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
- H01M50/609—Arrangements or processes for filling with liquid, e.g. electrolytes
- H01M50/627—Filling ports
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/102—Primary casings, jackets or wrappings of a single cell or a single battery characterised by their shape or physical structure
- H01M50/103—Primary casings, jackets or wrappings of a single cell or a single battery characterised by their shape or physical structure prismatic or rectangular
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/147—Lids or covers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/183—Sealing members
- H01M50/186—Sealing members characterised by the disposition of the sealing members
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/531—Electrode connections inside a battery casing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/531—Electrode connections inside a battery casing
- H01M50/533—Electrode connections inside a battery casing characterised by the shape of the leads or tabs
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
- H01M50/59—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries characterised by the protection means
- H01M50/593—Spacers; Insulating plates
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The application discloses energy memory and consumer, energy memory includes: the electrode assembly comprises a shell, an electrode assembly, a top cover, lower plastic, a connecting sheet and an insulating patch, wherein the shell is provided with an opening and is used for accommodating electrolyte; the electrode assembly is accommodated in the case; the top cover is covered on the opening and is provided with a liquid injection hole; the lower plastic is arranged on one side, close to the electrode assembly, of the top cover, and comprises a plurality of bosses, the bosses are located on one side, facing the electrode assembly, of the lower plastic, and the through holes are communicated with the liquid injection holes; the connecting sheet is arranged on one side of the lower plastic facing the electrode assembly, and a gap is formed between at least part of the connecting sheet and the lower plastic in the thickness direction of the connecting sheet; the insulating patch is attached to one side of the connecting sheet facing the electrode assembly and covers the connecting sheet and the through hole; the side of the boss close to the connecting piece is provided with a notch, the insulating patch, the connecting piece and the groove edge of the notch are enclosed to form a first flow channel of electrolyte, and the electrolyte enters the electrolyte injection hole and can flow to the electrode assembly through the first flow channel.
Description
Technical Field
The application relates to the technical field of energy storage, in particular to an energy storage device and electric equipment.
Background
Secondary batteries (e.g., lithium ion batteries) have high energy density, high power density, high cycle count, and long storage time as common energy storage devices, and have been widely used in recent years in large and medium-sized electric devices such as electric vehicles, electric bicycles, and other electric vehicles and energy storage facilities.
At present, the battery core in the secondary battery is generally required to be filled with electrolyte.
It is to be noted that the information disclosed in the above background section is only for enhancement of understanding of the background of the present application and therefore may include information that does not constitute prior art known to a person of ordinary skill in the art.
Disclosure of Invention
One of the main objects of the present application is to provide an energy storage device, which has better fluidity when electrolyte is injected, and improves the wetting uniformity of an electrode assembly.
In order to achieve the purpose of the application, the following technical scheme is adopted in the application:
according to an aspect of the present application, there is provided an energy storage device including:
a case having an opening, accommodating an electrolyte;
an electrode assembly accommodated in the case;
the top cover covers the opening and is provided with a liquid injection hole;
the lower plastic is provided with a through hole and is arranged on one side, close to the electrode assembly, of the top cover, the lower plastic comprises a plurality of bosses which are arranged at intervals in the length direction of the lower plastic, the plurality of bosses at least comprise first bosses and second bosses, the first bosses and the second bosses are respectively positioned at two ends of the length direction of the lower plastic, the plurality of bosses are positioned on one side, facing the electrode assembly, of the lower plastic, and the through hole is communicated with the liquid injection hole;
the connecting piece is arranged on one side, facing the electrode assembly, of the lower plastic, and a gap is formed between at least part of the connecting piece and the lower plastic in the thickness direction of the connecting piece;
the insulating patch is attached to one side, facing the electrode assembly, of the connecting sheet, and covers the connecting sheet and the through hole;
a notch is formed in one side, close to the connecting piece, of each of the first boss and the second boss, the notch comprises a first arc line section, a second arc line section, a third arc line section and a fourth arc line section which are sequentially arranged in the width direction of the lower plastic, the first arc line section is connected with the second arc line section, the third arc line section is connected with the fourth arc line section, the second arc line section is connected with the third arc line section, the first arc line section is closer to the through hole relative to the second arc line section, the fourth arc line section is closer to the through hole relative to the third arc line section, and the first arc line section, the second arc line section, the third arc line section and the fourth arc line section form a groove edge of the notch; the insulating patch, the connecting sheet and the groove edge enclose to form a first flow channel of the electrolyte, and the electrolyte enters the electrolyte injection hole and can flow to the electrode assembly through the first flow channel.
In the energy storage device provided by the embodiment, a gap is formed between the connecting sheet and the lower plastic, a notch is formed in one side of the boss close to the connecting sheet, and the insulating patch covers the connecting sheet and the through hole, so that the insulating patch, the connecting sheet and the groove edge are enclosed to form a first flow channel of electrolyte; when electrolyte is filled into the shell through the liquid filling hole, the insulating patch covers the connecting sheet and the through hole, so that the electrolyte flows along a gap between the insulating patch and the lower plastic, and then the electrolyte can flow out through the notch of the boss and further flow to the electrode assembly, so that the flow guide of the electrolyte is realized, and the electrolyte can fully flow to each part of the electrode assembly; the groove edge of the notch is formed by the first arc line segment, the second arc line segment, the third arc line segment and the fourth arc line segment, so that the corner of the notch of the boss is a round angle, and when electrolyte flows through the notch, the flow speed of the electrolyte at the corner of the notch is high, so that the electrolyte can flow into the electrode assembly more quickly and more smoothly; meanwhile, the corners of the notches are set to be round corners, so that the tabs can be prevented from being scratched by the corners of the notches, and the reliability of the energy storage device is improved.
According to an embodiment of the present application, the lower plastic is formed with reinforcing ribs extending toward one side of the electrode assembly on both sides in the width direction, the connecting sheet and the reinforcing ribs have a gap in the width direction of the lower plastic, and the insulating patch at least partially positioned on the connecting sheet and the reinforcing ribs have a gap in the width direction of the lower plastic; the insulating patch, the connecting sheet and the reinforcing ribs enclose to form a second flow channel of the electrolyte, and the electrolyte enters the electrolyte injection hole and can flow to the electrode assembly through the second flow channel.
The energy storage device that this embodiment provided, through insulating paster, the second runner that closes formation electrolyte is enclosed with the strengthening rib to the connection piece, when annotating electrolyte in to the casing through annotating the liquid hole, because insulating paster covers connection piece and through-hole, make electrolyte flow along insulating paster and connection piece and the clearance between the plastic down, then the clearance of electrolyte accessible connection piece and strengthening rib flows out, and then flow to electrode subassembly, the realization is to the water conservancy diversion of electrolyte, the second runner cooperates with first runner, make each part of the flow to electrode subassembly that electrolyte can be abundant.
According to one embodiment of the application, the connecting sheet comprises a pole connecting part, a transition part and two pole lug connecting parts, wherein the pole connecting part is connected with the two pole lug connecting parts through the transition part; the two tab connecting portions are located on one side, away from the notch, of the transition portion, the two tab connecting portions are distributed at intervals in the width direction of the connecting sheet, the through hole is located between the two tab connecting portions, and the insulating patch completely covers the area between the two tab connecting portions.
The energy storage device provided by the embodiment has the advantages that the through hole is located between the two tab connection parts, the insulation patch completely covers the area between the two tab connection parts, so that electrolyte flowing into the through hole flows towards the gap between the connecting sheet and the lower plastic under the flow guiding effect of the insulation patch, and then the electrolyte flows into the electrode assembly through the first flow channel and the second flow channel.
According to an embodiment of the application, the connecting piece further comprises a protruding portion, the protruding portion is located on a side of the transition portion facing the notch, and at least a portion of the protruding portion is located in the notch.
According to the energy storage device provided by the embodiment, by arranging the protruding part, when the connecting sheet is subjected to laser welding with the pole through the pole connecting part, the welding nozzle convenient for laser welding through the protruding part abuts against the side edge of one side of the protruding part on the connecting sheet, and an avoiding space is provided for the welding nozzle to abut against the protruding part through the notch, so that the stability of the laser welding between the connecting sheet and the pole is improved, and the efficiency and the yield of the laser welding between the connecting sheet and the pole are improved; after the connecting sheet is connected and electrified with the pole, the protruding part can provide an extra current circulation path when the current is too large, and the current carrying capacity of the connecting sheet is improved, so that the stability and the safety of the energy storage device are improved.
According to an embodiment of the present application, in a length direction of the lower plastic, a gap is provided between the transition portion and the boss, and the insulation patch covers the gap.
In the energy storage device provided by the embodiment, the gap is formed between the transition part and the boss, and the insulating patch covers the gap, so that the electrolyte in the first flow channel flows into the electrode assembly through the gap; in addition, at least part of the insulating patches covers the edge of the boss when the insulating patches cover the gap, so that the scratch of the edge of the boss on the pole lug can be avoided.
According to an embodiment of the present application, in a length direction of the lower plastic, the insulation patch covers the protrusion and the at least partial notch.
According to the energy storage device provided by the embodiment, the insulation patch covers the protrusion, and completely covers the connecting sheet, so that the insulation effect of the connecting sheet is formed, and the short circuit caused by the contact of the connecting sheet and a pole piece in a bare cell is avoided; simultaneously, cover at least part breach through making insulating paster membrane for electrolyte need flow from the breach through first arc line section and fourth arc line section, has improved the velocity of flow of electrolyte relatively through first arc line section and fourth arc line section.
According to an embodiment of the present application, at least a portion of the insulation patch covers a side of the boss facing the electrode assembly.
The energy storage device provided by the embodiment is characterized in that at least part of the insulation patches covers one side of the boss facing the electrode assembly, so that when gaps and partial gaps are formed between the covering transition part and the boss, the adhesion force of the insulation patches is improved, and the insulation patches are prevented from falling off.
According to an embodiment of this application, electrode subassembly include naked electric core and connect in utmost point ear on the naked electric core, utmost point ear with the connection piece is connected, insulating paster still covers completely utmost point ear and at least part naked electric core.
The energy storage device provided by the embodiment has the advantages that the insulating patches completely cover the connecting sheets and the lugs, short circuit caused by welding slag falling into the bare cell is avoided, and meanwhile, the stability of the lugs welded with the connecting sheets is improved.
According to an embodiment of the present application, the insulation patch includes a plurality of sub-insulation patches, and adjacent sub-insulation patches have an overlapping area therebetween.
The energy storage device provided by the embodiment has the advantages that the plurality of sub-insulating patches cover different areas of the connecting sheet, the lug and the first naked electric core respectively, the overlapping area is arranged between the adjacent sub-insulating patches, the process difficulty in the process of bonding the insulating patches is reduced, the bonding strength of the insulating patches in different areas is improved, and meanwhile, the manufacturing difficulty and the manufacturing cost of the insulating patches are also reduced.
According to an embodiment of the present application, the notch further comprises: at least one of a first straight line segment, a second straight line segment and a third straight line segment, wherein the first straight line segment is connected between the first arc segment and the second arc segment, the second straight line segment is connected between the third arc segment and the fourth arc segment, and the third straight line segment is connected between the second arc segment and the third arc segment.
The energy storage device provided by the embodiment is connected between the first arc line section and the second arc line section through the first straight line section, the second straight line section is connected between the third arc line section and the fourth arc line section, and the third straight line section is connected between the second arc line section and the third arc line section, so that the corner of the notch is a round angle, and the flowing speed of electrolyte flowing through is improved.
According to an embodiment of the present application, the radian of the first arc segment is
And/or the arc of said fourth arc segment is
。
In the energy storage device provided by this embodiment, the radian of the first arc segment is set to
The flow of the electrolyte at the first arc section is provided, so that the notch is formed conveniently; by making the first arc segment have an arc of
The flow of the electrolyte at the fourth arc segment is favorably provided, and the formation of the notch is facilitated.
According to an embodiment of the application, the arc radius of the first arc segment is 1mm to 3mm, and/or the arc radius of the fourth arc segment is 1mm to 3mm.
According to the energy storage device provided by the embodiment, the arc radius of the first arc line segment is 1mm-3mm, so that the first arc line segment can meet the requirement of improving the flow rate of the electrolyte; the arc radius of the fourth arc line segment is 1 mm-3 mm, so that the fourth arc line segment can meet the requirement of improving the flow rate of the electrolyte.
According to an embodiment of the present application, the second arc segment has an arc degree of
And/or the third arc segment has an arc of
。
In the energy storage device provided by this embodiment, the radian of the second arc segment is set to
The flow of the electrolyte at the second arc line section is favorably provided, and the formation of a gap is facilitated; by making the second arc segment have an arc of
The flow of the electrolyte at the third arc segment is favorably provided, and the formation of the notch is facilitated. Of course, the arc of the third arc segment may be less than
Or greater than
This is not limited by the present application.
According to an embodiment of the application, the arc radius of the second arc segment is 1mm to 3mm, and/or the arc radius of the third arc segment is 1mm to 3mm.
According to the energy storage device provided by the embodiment, the arc radius of the second arc line segment is 1mm-3mm, so that the second arc line segment can meet the requirement of improving the flow rate of the electrolyte; the arc radius of the third arc line segment is 1 mm-3 mm, so that the second arc line segment can meet the requirement of improving the flow rate of the electrolyte.
According to an embodiment of the application, in the width direction of the lower plastic, the width of the notch is 40% -60% of the width of the boss.
The energy storage device provided by the embodiment has the advantages that the width of the notch is 40% -60% of the width of the boss, a sufficient gap is formed between the notch and the boss, the electrolyte can flow conveniently, meanwhile, the welding tip can abut against the connecting piece conveniently, and a sufficient avoiding space is formed.
According to an embodiment of the present disclosure, the width of the gap is 25mm to 30mm in the width direction of the lower plastic.
According to the energy storage device provided by the embodiment, the width of the notch is 25mm to 30mm, so that a sufficient gap is formed between the notch and the protruding part, the flowing of electrolyte is facilitated, meanwhile, the welding tip is convenient to abut against the connecting sheet, and a sufficient avoiding space is formed.
According to an embodiment of the application, in the length direction of the lower plastic, the depth of the notch is 20% -30% of the length of the boss.
The energy storage device provided by the embodiment has the advantages that the depth of the notch is 20% -30% of the length of the boss, a sufficient gap is guaranteed between the first notch and the first protruding portion, electrolyte can flow conveniently, meanwhile, the welding nozzle can abut against the connecting piece conveniently, and a sufficient avoiding space is formed.
According to an embodiment of the application, the depth of the notch is 3mm to 6mm in the length direction of the lower plastic.
According to the energy storage device provided by the embodiment, the depth of the notch is 3mm to 6mm, so that a sufficient gap is formed between the notch and the boss, the flowing of electrolyte is facilitated, meanwhile, the welding tip is convenient to abut on the connecting sheet, and a sufficient avoiding space is formed.
According to an embodiment of the present application, the notch further comprises: the first straight line section is connected between the first arc line section and the second arc line section, the second straight line section is connected between the third arc line section and the fourth arc line section, and the third straight line section is connected between the second arc line section and the third arc line section;
the protruding portion comprises a top surface facing the notch, a first side surface and a second side surface, the first side surface and the second side surface are located on two sides of the top surface in the width direction of the connecting piece, the top surface and the third straight line segment are arranged in opposite directions and are provided with a first preset gap, the first side surface and the first straight line segment are arranged in opposite directions and are provided with a second preset gap, and the second side surface and the second straight line segment are arranged in opposite directions and are provided with a third preset gap; the first preset gap is from 2mm to 5mm, the second preset gap is from 3mm to 10mm, and the third preset gap is from 3mm to 10mm.
The energy storage device provided by the embodiment has the preset gap between the opposite side walls of the boss and the first notch, and the outlet of the first flow channel is formed between the first boss and the first notch, so that the purpose that electrolyte flows into the bare cell through the first flow channel is realized.
According to another aspect of the present application, a powered device is provided, which comprises the energy storage device described above.
In the electric equipment provided by the embodiment, a gap is formed between the connecting sheet and the lower plastic in the energy storage device, a notch is formed in one side, close to the connecting sheet, of the boss, and the insulating patch covers the connecting sheet and the through hole, so that the insulating patch, the connecting sheet and the groove edge are enclosed to form a first flow channel of electrolyte; when electrolyte is filled into the shell through the liquid filling hole, the insulating patch covers the connecting sheet and the through hole, so that the electrolyte flows along a gap between the insulating patch and the lower plastic, and then the electrolyte can flow out through the notch of the boss and further flow to the electrode assembly, so that the flow guide of the electrolyte is realized, and the electrolyte can fully flow to each part of the electrode assembly; the groove edge of the notch is formed by the first arc line segment, the second arc line segment, the third arc line segment and the fourth arc line segment, so that the corner of the notch of the boss is a round angle, and when electrolyte flows through the notch, the flow speed of the electrolyte at the corner of the notch is high, so that the electrolyte can flow into the electrode assembly more quickly and more smoothly; simultaneously, set up the corner of breach into the fillet, can avoid the corner fish tail utmost point ear of breach, improved energy memory's reliability, and then improved consumer's reliability.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The above and other features and advantages of the present application will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings.
Fig. 1 is a schematic diagram of an energy storage device according to an embodiment of the present application.
Fig. 2 is an exploded view of an energy storage device according to an embodiment of the present application.
Fig. 3 is a schematic view illustrating connection of an electrode assembly and a connection sheet according to an embodiment of the present application.
Fig. 4 is a schematic view of a top cover provided by an embodiment of the present application.
Fig. 5 is a schematic view of a lower plastic and a connecting piece according to an embodiment of the present disclosure.
Fig. 6 is a schematic view of an insulation patch and a connecting pad provided in an embodiment of the present application.
Fig. 7 is a schematic view of a lower plastic according to an embodiment of the present disclosure.
Fig. 8 is a schematic view of a first connecting piece provided in an embodiment of the present application.
Fig. 9 is a schematic view of a second connecting piece provided in one embodiment of the present application.
FIG. 10 is a schematic illustration of a vehicle provided in an embodiment of the present application.
Description of reference numerals:
10. an energy storage device;
111. a top cover; 112. plastic is discharged; 1120. a boss; 1121. a first boss; 1122. a second boss; 113. a notch; 1131. a first notch; 1132. a second notch; 1141. a first arc segment; 1142. a second arc segment; 1143. a third arc segment; 1144. a fourth arc segment; 1145. a first straight line segment; 1146. a second straight line segment; 1147. a third straight line segment; 115. a pole column; 1151. a first pole column; 1152. a second pole; 1160. an explosion-proof valve; 1170. a liquid injection hole; 1180. a through hole; 1190. reinforcing ribs;
120. connecting sheets; 121. a first connecting piece; 1211. a first transition portion; 1212. a first tab connection part; 1213. a first boss portion; 1214. a first pole connecting part; 122. a second connecting sheet; 1221. a second transition portion; 1222. a second tab connection portion; 1223. a second boss portion; 1224. a second pole connecting portion;
130. an electrode assembly; 1310. a first bare cell; 1311. a first bare cell first tab; 1312. a first bare cell second tab; 1320. a second bare cell; 1321. a first tab of a second bare cell; 1322. a second bare cell second tab;
140. a housing;
150. an insulating patch; 151. a first insulating patch; 152. a second insulating patch;
20. a vehicle.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus a detailed description thereof will be omitted.
Embodiments of the present application first provide an energy storage device, as shown in fig. 1 to 7, an energy storage device 10 including: the electrode assembly comprises a shell 140, an electrode assembly 130, a top cover 111, a lower plastic 112, a connecting sheet 120 and an insulating patch 150, wherein the shell 140 is provided with an opening for accommodating electrolyte, and the electrode assembly 130 is accommodated in the shell 140; the top cover 111 covers the opening of the shell 140, and the top cover 111 is provided with a liquid injection hole 1170; the lower plastic 112 has a through hole 1180, the lower plastic 112 is disposed on one side of the top cap 111 close to the electrode assembly 130, the lower plastic 112 has a plurality of bosses 1120 disposed at intervals along the length direction X of the lower plastic 112, the plurality of bosses 1120 at least include a first boss 1121 and a second boss 1122, the first boss 1121 and the second boss 1122 are respectively located at two ends of the length direction X of the lower plastic 112, the plurality of bosses 1120 are located on one side of the lower plastic 112 facing the electrode assembly 130, and the through hole 1180 is communicated with the injection hole 1170; the connection sheet 120 is disposed on a side of the lower plastic 112 facing the electrode assembly 130, and a gap is formed between at least a portion of the lower connection sheet 120 and the lower plastic 112 in a thickness direction of the connection sheet 120; the insulating patch 150 is attached to the connecting sheet 120 on the side facing the electrode assembly 130, and covers the connecting sheet 120 and the through hole 1180.
A notch 113 is formed in one side of the first boss 1121 and the second boss 1122 close to the connecting piece 120, the notch 113 includes a first arc segment 1141, a second arc segment 1142, a third arc segment 1143 and a fourth arc segment 1144 which are sequentially arranged along the width direction of the lower plastic 112, the first arc segment 1141 is connected with the second arc segment 1142, the third arc segment 1143 is connected with the fourth arc segment 1144, the second arc segment 1142 is connected with the third arc segment 1143, the first arc segment 1141 is closer to the through hole 1180 relative to the second arc segment 1142, the fourth arc segment 1144 is closer to the through hole 1180 relative to the third arc segment 1143, and the first arc segment 1141, the second arc segment 1142, the third arc segment 1143 and the fourth arc segment 1144 form a groove edge of the notch 113; the insulating patch 150, the connecting sheet 120 and the groove edge form a first flow channel for the electrolyte, and the electrolyte enters the electrolyte injection hole 1170 and can flow to the electrode assembly 130 through the first flow channel.
According to the energy storage device provided by the application, a gap is formed between the connecting sheet 120 and the lower plastic 112, a notch 113 is formed in one side, close to the connecting sheet 120, of the boss 1120, and the insulating patch 150 covers the connecting sheet 120 and the through hole 1180, so that the insulating patch 150, the connecting sheet 120 and the groove edge are enclosed to form a first flow channel of electrolyte; when electrolyte is filled into the case 140 through the filling hole 1170, the insulating patch 150 covers the connecting piece 120 and the through hole 1180, so that the electrolyte flows along the insulating patch 150 and a gap between the connecting piece 120 and the lower plastic 112, and then the electrolyte can flow out through the notch 113 of the boss 1120 and further flow to the electrode assembly 130, thereby realizing diversion of the electrolyte, enabling the electrolyte to sufficiently flow to each part of the electrode assembly 130, and improving the wetting uniformity of the electrode assembly 130; the first arc segment 1141, the second arc segment 1142, the third arc segment 1143 and the fourth arc segment 1144 form a groove edge of the notch 113, so that the corner of the notch 113 of the boss 1120 is a fillet, and when the electrolyte flows through the notch 113, the flow rate of the electrolyte at the corner of the notch 113 is high, so that the electrolyte can flow into the electrode assembly 130 more quickly and smoothly; meanwhile, the corners of the notch 113 are set to be round corners, so that the lugs can be prevented from being scratched by the corners of the notch 113, and the reliability of the energy storage device is improved.
Specifically, as shown in fig. 2 and 3, the electrode assembly 130 includes a bare cell, a first tab and a second tab, one of the first tab and the second tab is a positive electrode tab, and the other is a negative electrode tab. Wherein, naked electric core is the naked electric core of coiling formula, and electrode assembly 130 includes the naked electric core 1310 of first naked electric core 1310 and the naked electric core 1320 of second, and the naked electric core 1310 of first naked electric core 1310 and second is folded on thickness direction Z and is set up and place in casing 140. The first bare cell 1310 is connected with a first bare cell first tab 1311 and a first bare cell second tab 1312; the second bare cell 1320 is connected with a second bare cell first tab 1321 and a second bare cell second tab 1322. Of course, the electrode assembly 130 may also be a single bare cell, or formed by combining three, four or more single bare cells, which is not limited in this application.
Specifically, as shown in fig. 5-7, two bosses 1120, namely, a first boss 1121 and a second boss 1122, are formed at two ends of the lower plastic 112 in the length direction X. The first protrusion 1121 is provided with a first notch 1131, the second protrusion 1122 is provided with a second notch 1132, and the first notch 1131 and the second notch 1132 are oppositely opened. When the top cover 111 blocks the opening of the housing 140, the first bosses 1121 and the second bosses 1122 extend into the opening and abut against the side wall of the opening of the housing 140 to form guide and limit for mounting the top cover 111 on the opening of the housing 140, the top cover 111 can be quickly positioned and mounted on the housing 140, and the mounting efficiency of the top cover 111 and the housing 140 is improved; simultaneously through naked electric core butt in boss 1120 and the casing 140, form the fixed to naked electric core.
Specifically, as shown in fig. 2-5, the top cover 111 is provided with two poles 115, i.e., a first pole 1151 and a second pole 1152. Energy storage device 10 includes two tabs 120, a first tab 121 and a second tab 122, where the first tab 121 is located on a side adjacent to the first boss 1121, and the second tab 122 is located on a side adjacent to the second boss 1122.
In the following, specific structures of the lower plastic 112 and the connecting piece 120 in the present application are exemplified by specific matching structures of the first connecting piece 121 and the lower plastic 112, and specific matching structures of the second connecting piece 122 and the lower plastic 112, respectively.
In an embodiment of the present application, as shown in fig. 5-8, a first notch 1131 is disposed on one side of the first boss 1121 close to the first connection tab 121, the first notch 1131 is connected to a first arc segment 1141, a second arc segment 1142, a third arc segment 1143, and a fourth arc segment 1144, which are sequentially disposed along the width direction Y of the lower plastic 112, the first arc segment 1141 is connected to the second arc segment 1142, the third arc segment 1143 is connected to the fourth arc segment 1144, the second arc segment 1142 is connected to the third arc segment 1143, the first arc segment 1141 is closer to the through hole 1180 than the second arc segment 1142, the fourth arc segment 1144 is closer to the through hole 1180 than the third arc segment 1143, and the first arc segment 1141, the second arc segment 1142, the third arc segment 1143, and the fourth arc segment 1144 form a groove edge of the first notch 1131; the first insulating patch 151, the first connecting piece 121 and the first groove form a first electrolyte flow channel along the surrounding. By providing a gap between the first connection plate 121 and the lower plastic 112, a first notch 1131 is formed on one side of the first boss 1121 close to the first connection plate 121, and the first insulation patch 151 covers the first connection plate 121 and the through hole 1180, so that a first channel of electrolyte is formed by the first insulation patch 151, the first connection plate 121 and the first groove along the surrounding; when the electrolyte is filled into the case 140 through the filling hole 1170, the first insulating patch 151 covers the first connection piece 121 and the through hole 1180, so that the electrolyte flows along the first insulating patch 151 and the gap between the first connection piece 121 and the lower plastic 112, and then the electrolyte can flow out through the first notch 1131 of the first boss 1121, and further flows to the electrode assembly 130, thereby guiding the electrolyte, so that the electrolyte can sufficiently flow to each part of the electrode assembly 130.
Wherein, the lower plastic 112 is formed with reinforcing ribs 1190 extending toward one side of the electrode assembly 130 at two sides in the width direction Y, the first connecting tab 121 and the reinforcing ribs 1190 have a gap in the width direction of the lower plastic 112, and the first insulating patch 151 and the reinforcing ribs 1190 at least partially positioned on the first transition portion 1211 have a gap in the width direction Y of the lower plastic 112; the first insulating patch 151, the first connecting piece 121, and the rib 1190 enclose a second flow channel for the electrolyte, and the electrolyte can flow into the electrolyte injection hole 1170 and toward the electrode assembly 130 through the second flow channel. The first insulating patch 151, the first connecting piece 121 and the reinforcing rib 1190 are enclosed to form a second flow channel of electrolyte, when the electrolyte is filled into the housing 140 through the liquid filling hole 1170, the first insulating patch 151 covers the first connecting piece 121 and the through hole 1180, so that the electrolyte flows along the first insulating patch 151 and the gap between the first connecting piece 121 and the lower plastic 112, and then the electrolyte can flow out through the gap between the first connecting piece 121 and the reinforcing rib 1190 and further flow to the electrode assembly 130, so that the electrolyte is guided, and the second flow channel is matched with the first flow channel, so that the electrolyte can fully flow to each part of the electrode assembly 130.
As shown in fig. 5 to 8, the first connecting strip 121 includes a first pole connecting portion 1214, a first transition portion 1211 and two first tab connecting portions 1212, and the first pole connecting portion 1214 is connected to the two first tab connecting portions 1212 through the first transition portion 1211; the two first tab connection portions 1212 are located on a side of the first transition portion 1211 facing away from the first notch 1131, the two first tab connection portions 1212 are spaced apart from each other in the width direction of the first connection tab 121, the through hole 1180 is located between the two first tab connection portions 1212, and the first insulation patch 151 completely covers an area between the two first tab connection portions 1212. By locating the through hole 1180 between the two first tab connection parts 1212, the first insulation patch 151 completely covers an area between the two first tab connection parts 1212, so that the electrolyte flowing in through the through hole 1180 flows toward a gap between the first connection piece 121 and the lower plastic 112 by the flow of the first insulation patch 151, and further flows into the electrode assembly 130 through the first flow channel and the second flow channel.
Further, as shown in fig. 5 and 8, the first connecting plate 121 further includes a first protrusion 1213, the first protrusion 1213 is located on a side of the first transition 1211 facing the first notch 1131, and at least a portion of the first protrusion 1213 is located in the first notch 1131. By arranging the first protruding portion 1213, when the first connecting piece 121 is laser-welded with the first pole 1151 through the first pole connecting portion 1214, a welding tip (copper tip) which is convenient for laser welding through the first protruding portion 1213 abuts against the side edge of one side of the first protruding portion 1213 on the first connecting piece 121, an avoiding space is provided for the welding tip to abut against the first protruding portion 1213 through the first notch 1131, the stability of laser welding of the first connecting piece 121 and the first pole 1151 is improved, and the efficiency and yield of laser welding of the first connecting piece 121 and the first pole 1151 are improved; after the first connection tab 121 is connected and powered with the first pole 1151, the first protrusion 1213 may provide an additional current flowing path when the current is too large, so that the current carrying capacity of the first connection tab 121 is improved, and the stability and safety of the energy storage device are improved.
As shown in fig. 5 and 6, in the length direction X of the lower plastic 112, a gap is formed between the first transition portion 1211 and the first boss 1121, and the first insulating patch 151 covers the gap. By having a gap between the first transition portion 1211 and the first boss 1121 and covering the gap with the first insulating patch 151, the electrolyte of the first flow channel flows into the electrode assembly 130 through the first notch 1131; in addition, when the first insulation patch 151 covers the gap, at least a part of the first insulation patch 151 covers the edge of the first boss 1121, so that the edge of the first boss 1121 can be prevented from scratching the tab.
As shown in fig. 6, in the length direction X of the lower plastic 112, the first insulating patch 151 covers the first protrusion 1213 and at least a portion of the first notch 1131. The first insulation patch 151 covers the first protrusion, and the first insulation patch 151 completely covers the first connection piece 121, so that the insulation effect of the first connection piece 121 is formed, and short circuit caused by contact of the first connection piece 121 and a pole piece in a bare cell is avoided; meanwhile, the first insulation patch 151 is coated on at least a portion of the first notch 1131, so that the electrolyte needs to flow out of the first notch 1131 through the first arc segment 1141 and the fourth arc segment 1144, and the flow rate of the electrolyte is relatively increased through the first arc segment 1141 and the fourth arc segment 1144.
Wherein at least a portion of the first insulation patch 151 covers a side of the first bosses 1121 facing the electrode assembly 130, as shown in fig. 6. By covering at least a portion of the first patch 151 on the side of the first boss 1121 facing the electrode assembly 130, the first patch 151 has improved adhesion when covering the gap between the first transition portion 1211 and the first boss 1121 and a portion of the first notch 1131, and the first patch 151 is prevented from falling off.
The first insulating patch 151 further covers a first bare cell first tab 1311 connected to the first tab connection portion 1212, and at least a part of the first bare cell 1310, and a second bare cell first tab 1321 and at least a part of the second bare cell 1320. Through making first insulation paster 151 still cover the first utmost point ear 1311 of first naked electric core and the first naked electric core 1310 of at least part of being connected with first utmost point ear connecting portion 1212, and the first utmost point ear 1321 of the naked electric core of second and the naked electric core 1320 of at least part second, make first insulation paster 151 cover first connection piece 121 and the first utmost point ear 1311 of first naked electric core and the first utmost point ear 1321 of the naked electric core of second completely, avoid welding slag to fall into and cause the short circuit in the naked electric core, still improved the stability after first utmost point ear connecting portion 1212 and the first utmost point ear 1311 of first naked electric core and the first utmost point ear 1321 welding of the naked electric core of second simultaneously.
Wherein, first insulating paster 151 is formed by connecting a plurality of sub-insulating paster, a plurality of sub-insulating paster cover first connection piece 121 respectively, first naked electric core 1310, the first utmost point ear 1311 of first naked electric core, the different regions of the first utmost point ear 1321 of second naked electric core 1320 and second, overlap region has between the adjacent sub-insulating paster, the technology degree of difficulty when having reduced first insulating paster 151 and bonding, the bonding strength of first insulating paster 151 in different regions has been improved, the manufacturing degree of difficulty and the cost of first insulating paster 151 have still been reduced simultaneously.
Wherein, the first notch 1131 further includes: at least one of a first straight segment 1145, a second straight segment 1146, and a third straight segment 1147, the first straight segment 1145 being connected between a first arc segment 1141 and a second arc segment 1142, the second straight segment 1146 being connected between a third arc segment 1143 and a fourth arc segment 1144, and the third straight segment 1147 being connected between a second arc segment 1142 and a third arc segment 1143. The first straight line section 1145 is connected between the first arc line section 1141 and the second arc line section 1142, the second straight line section 1146 is connected between the third arc line section 1143 and the fourth arc line section 1144, and the third straight line section 1147 is connected between the second arc line section 1142 and the third arc line section 1143, so that the corner of the first notch 1131 is a fillet, and the flow rate of the electrolyte flowing through is improved.
The included angle between the first straight line segment 1145 and the third straight line segment 1147 is an obtuse angle. The included angle between the first straight line segment 1145 and the third straight line segment 1147 is an obtuse angle, that is, the opening of the first notch 1131 is relatively enlarged, so that the electrolyte can further conveniently flow into the gap between the first protrusion 1213 and the first notch 1131, the radian of the corner between the first straight line segment 1145 and the third straight line segment 1147 can be increased, the flow rate of the electrolyte at the first straight line segment 1145 and the third straight line segment 1147 can be further increased, and the electrolyte can flow into the electrode assembly 130 more quickly. Of course, the angle between first straight segment 1145 and third straight segment 1147 may be a right angle.
The included angle between the second straight line segment 1146 and the third straight line segment 1147 is an obtuse angle. The included angle between the second straight-line section 1146 and the third straight-line section 1147 is an obtuse angle, that is, the opening of the first notch 1131 is relatively enlarged, so that the electrolyte can further conveniently flow into the gap between the first protruding portion 1213 and the first notch 1131, the radian of the corner of the second straight-line section 1146 and the third straight-line section 1147 can be increased, the flow rate of the electrolyte at the second straight-line section 1146 and the third straight-line section 1147 can be further increased, and the electrolyte can flow into the electrode assembly 130 more quickly. Of course, the angle between second straight section 1146 and third straight section 1147 may be a right angle.
Wherein the radian of the first arc segment 1141 is
E.g. of
、
、
And the like. By making the arc of the first arc segment 1141 be
It is advantageous to provide for the flow of electrolyte at the first arc segment 1141 to facilitate the formation of the first notch 1131. Of course, the arc of the first arc segment 1141 may be less than
Or greater than
This is not limited by the present application.
Wherein the radian of the fourth arc segment 1144 is
E.g. of
、
、
And the like. By making the arc of the first arc segment 1141 be
It is advantageous to provide for the flow of electrolyte at the fourth arc segment 1144 to facilitate the formation of the first notch 1131. Of course, the arc of the fourth arc segment 1144 may be less than
Or greater than
This is not limited by the present application. The radian of the first arc segment 1141 and the radian of the fourth arc segment 1144 can be the same or different.
The arc radius of the first arc segment 1141 is 1mm to 3mm, such as 1.0mm, 1.5mm, 2.0mm, 2.5mm, 3.0mm, etc., which are not listed herein; the arc radius of the first arc segment 1141 is set to be 1mm to 3mm, so that the first arc segment 1141 can meet the requirement of improving the flow rate of the electrolyte. Of course, the arc radius of the first arc segment 1141 may be less than 1mm or greater than 3mm.
The arc radius of the fourth arc segment 1144 is 1mm to 3mm, such as 1.0mm, 1.5mm, 2.0mm, 2.5mm, 3.0mm, etc., which are not listed herein; the arc radius of the fourth arc segment 1144 is 1mm to 3mm, so that the first arc segment 1141 can meet the requirement of improving the flow rate of the electrolyte. Of course, the arc radius of the fourth arc segment 1144 may be less than 1mm or greater than 3mm. The arc radius of the first arc segment 1141 and the arc radius of the fourth arc segment 1144 may be the same or different.
Wherein the radian of the second arc segment 1142 is
E.g. of
、
、
And the like. By making the arc of the second arc segment 1142 be
It is advantageous to provide for the flow of electrolyte at the second arc segment 1142 to facilitate the formation of the first notch 1131. Of course, the second arc segment 1142 may have an arc less than
Or greater than
This is not limited by the present application.
Wherein the radian of the third arc segment 1143 is
E.g. of
、
、
And the like. By making the arc of the second arc segment 1142 be
It is advantageous to provide for the flow of electrolyte at the third arc segment 1143 to facilitate the formation of the first notch 1131. Of course, the arc of the third arc segment 1143 may be less than
Or greater than
This is not limited by the present application. The radian of the second arc segment 1142 can be the same as or different from the radians of the first arc segment 1141, the third arc segment 1143 and the fourth arc segment 1144.
The arc radius of the second arc segment 1142 is 1mm to 3mm, such as 1.0mm, 1.5mm, 2.0mm, 2.5mm, 3.0mm, etc., which are not listed herein; the arc radius of the second arc segment 1142 is 1mm to 3mm, so that the second arc segment 1142 can meet the requirement of improving the flow rate of the electrolyte. Of course, the arc radius of the second arc segment 1142 may be less than 1mm or greater than 3mm.
The arc radius of the third arc segment 1143 is 1mm to 3mm, such as 1.0mm, 1.5mm, 2.0mm, 2.5mm, 3.0mm, etc., which are not listed herein; the arc radius of the third arc segment 1143 is 1mm to 3mm, so that the second arc segment 1142 can meet the requirement of improving the flow rate of the electrolyte. Of course, the arc radius of the third arc segment 1143 may be less than 1mm or greater than 3mm. The arc radius of the second arc segment 1142 may be the same as or different from the arc radii of the first arc segment 1141, the third arc segment 1143, and the fourth arc segment 1144.
In the width direction of the lower plastic 112, the width of the first notch 1131 is 40% to 60% of the width of the first boss 1121, for example, 40%, 45%, 50%, 55%, 60%, and the like, which are not listed herein. Sufficient clearance is ensured between the first notch 1131 and the first protruding portion 1213 to facilitate the flow of the electrolyte, and at the same time, the contact of the welding tip on the first connecting piece 121 is facilitated, so that a sufficient avoiding space is formed. Of course, the width of the first notch 1131 may also be less than 40% of the width of the first boss 1121 or greater than 60% of the width of the first boss 1121, which is not limited in the present application.
Wherein, the length of the lower plastic 112 can be 250mm to 280mm, such as 250mm, 260.88mm, 270mm, 280mm, etc.; the width of the lower plastic 112 can be 50mm to 60mm, such as 50mm, 52mm, 53mm, 58.08mm, 60mm and the like; the maximum width of the first boss 1121 is the same as the width of the lower plastic 112, and the thickness of the first boss 1121 may be 2mm to 3mm, for example, 2.0mm, 2.2mm, 2.58mm, 2.8mm, 3.0mm, and the like; the length of the first boss 1121 may be 15mm to 25mm, for example, 15mm, 18mm, 20mm, 22mm, 25mm, and the like, and the length is the maximum length of the first boss 1121.
The width of the first notch 1131 is 25mm to 30mm, for example, 25mm, 26mm, 27mm, 28.13mm, 29mm, and 30mm, which is not specifically listed here, and when the first notch 1131 has a non-uniform width structure in the depth direction, the width is the maximum width of the first notch 1131. Sufficient clearance is ensured between the first notch 1131 and the first protruding portion 1213, so that the flow of the electrolyte is facilitated, and meanwhile, the contact of the welding tip on the first connecting piece 121 is facilitated, so that a sufficient avoiding space is formed. Of course, the width of the first notch 1131 may also be less than 25mm or greater than 30mm, which is not limited in this application.
In the length direction X of the lower plastic 112, the depth of the first notch 1131 is 20% to 30% of the length of the first boss 1121, for example, 20%, 22%, 25%, 28%, 30%, and the like, which are not listed herein. Sufficient clearance is ensured between the first notch 1131 and the first protruding portion 1213 to facilitate the flow of the electrolyte, and at the same time, the contact of the welding tip on the first connecting piece 121 is facilitated, so that a sufficient avoiding space is formed. Of course, the depth of the first notch 1131 may also be less than 20% of the length of the first boss 1121 or greater than 30% of the length of the first boss 1121, which is not limited in the present application.
The depth of the first notch 1131 is 3mm to 6mm, such as 3.0mm, 3.5mm, 4.0mm, 4.5mm, 5.0mm, 5.5mm, and 6.0mm, which are not listed here. Sufficient clearance is ensured between the first notch 1131 and the first protruding portion 1213 to facilitate the flow of the electrolyte, and at the same time, the contact of the welding tip on the first connecting piece 121 is facilitated, so that a sufficient avoiding space is formed. Of course, the depth of the first notch 1131 may also be less than 3mm or greater than 6mm, which is not limited in this application.
Illustratively, the first bosses 1121 are symmetrical about a central axis of the lower plastic 112 in the length direction X. Through making first boss 1121 symmetrical about the axis of the length direction X of top cap 111, then first boss 1121 is symmetrical structure, first breach 1131 is symmetrical structure, first arc line segment 1141 is symmetrical with fourth arc line segment 1144, second arc line segment 1142 is symmetrical with third arc line segment 1143 for electrolyte flows into the clearance between first bellying 1213 and first breach 1131 evenly from the both sides on the lower plastic 112 width direction Y, thereby further makes electrolyte can flow into naked electric core evenly.
The first protrusion 1213 includes a top surface facing the first notch 1131, and a first side surface and a second side surface located on two sides of the top surface in the width direction of the first connecting tab 121, where the top surface, the first side surface, and the second side surface are planes, the top surface is perpendicular to the length direction X of the lower plastic 112, and an included angle between the first side surface and the top surface is a right angle or an obtuse angle. When the included angle between the side surface and the top surface of the first protruding portion 1213 is a right angle, the orthographic projection of the first protruding portion 1213 on the lower plastic 112 is rectangular; when the included angle between the side surface and the top surface of the first protruding portion 1213 is an obtuse angle, the orthographic projections of the first protruding portion 1213 on the lower plastic 112 are all trapezoidal; of course, the included angle between the side surface and the top surface of the first protruding portion 1213 may also be an acute angle, and the first side surface and the second side surface of the first protruding portion 1213 may also be an arc surface or a concave-convex surface, which is not limited in this application.
The top surface of the first protruding portion 1213 is opposite to the third straight section 1147, and has a first predetermined gap, where the first predetermined gap is 2mm to 5mm, for example, 2mm, 3mm, 4mm, 5mm, and the like, which is not listed here; the first side surface of the first protrusion 1213 is disposed opposite to the first straight line 1145 and has a second predetermined gap, where the second predetermined gap is 3mm to 10mm, such as 3mm, 5mm, 8mm, 10mm, and the like, which is not listed herein; the second side surface of the first protruding portion 1213 is opposite to the second straight section 1146 and has a third predetermined gap, which is 3mm to 10mm, for example, 3mm, 5mm, 8mm, 10mm, etc., but the present application is not limited thereto. Through having preset the clearance between the lateral wall that makes first bellying 1213 and first breach 1131 opposite directions, form the export of first runner between first bellying 1213 and first breach 1131, realize the purpose that electrolyte flows in naked electric core through first runner.
In the width direction Y of the first connecting piece 121, the width of the first protrusion portion 1213 is 20% to 50% of the width of the first transition portion 1211, for example, 20%, 25%, 30%, 35%, 40%, 45%, 50%, etc., which is not specifically listed here, and the specific width of the first protrusion portion 1213 can be set according to the specific size of the first connecting piece 121. By making the width of the first projection portions 1213 20% to 50% of the width of the first transition portion 1211, the first projection portions 1213 can be made to have a sufficient width to facilitate abutment of the welding tip, so that the first projection portions 1213 can provide an additional current flow path; meanwhile, the first notch 1131 can be prevented from being too wide, which results in too small area of the first boss 1121. Of course, the width of the first protrusion portion 1213 may also be less than 20% of the width of the first transition portion 1211, or the width of the first protrusion portion 1213 may be greater than 50% of the width of the first transition portion 1211, which is not limited in this application.
In the length direction X of the first connecting piece 121, the length of the first protrusion portion 1213 is 10% to 30% of the length of the first transition portion 1211, for example, 10%, 15%, 20%, 25%, 30%, etc., which is not specifically mentioned herein, and the specific length of the first protrusion portion 1213 can be set according to the specific size of the first connecting piece 121. By making the length of the first protruding portion 1213 10% to 30% of the length of the first transition portion 1211, the first protruding portion 1213 can have a sufficient length to facilitate the abutment of the welding tip without being affected by the welding position of the first terminal connecting portion 1214, so that the first protruding portion 1213 can provide an additional current flow path; while the first notch 1131 can be prevented from being too deep in the longitudinal direction X of the top cover 111.
Here, the first protrusion 1213 is symmetrical about a central axis of the length direction X of the first connection piece 121, that is, the first protrusion 1213 is located at a middle position of the first connection piece 121 in the width direction Y of the first connection piece 121. The first post connecting portion 1214 is located in the middle region of the first transition portion 1211, and the first protruding portion 1213 is located at the middle position of the first connecting plate 121, so that the welding tip abuts against the first connecting plate 121.
Wherein the shape of the first protrusion 1213 matches the shape of the first indentation 1131. For example, the orthographic projections of the first protrusions 1213 and the first indentations 1131 on the lower plastic 112 are rectangular, or the orthographic projections of the first protrusions 1213 and the first indentations 1131 on the lower plastic 112 are trapezoidal, etc. Of course, the shape of the first protrusion 1213 may not match the shape of the first notch 1131, for example, the first protrusion 1213 is rectangular, and the first notch 1131 is semicircular, which is not limited in this application.
In an embodiment of the present application, as shown in fig. 5-7 and 9, a second notch 1132 is disposed on one side of the second boss 1122 close to the second connecting plate 122, the second notch 1132 is sequentially disposed along a first arc segment 1141, a second arc segment 1142, a third arc segment 1143 and a fourth arc segment 1144 in the width direction Y of the lower plastic 112, the first arc segment 1141 is connected to the second arc segment 1142, the third arc segment 1143 is connected to the fourth arc segment 1144, the second arc segment 1142 is connected to the third arc segment 1143, the first arc segment 1141 is closer to the through hole 1180 than the second arc segment 1142, the fourth arc segment 1144 is closer to the liquid injection hole 1170 than the third arc segment 1143, and the first arc segment 1141, the second arc segment 1142, the third arc segment 1143 and the fourth arc segment 1144 form a second groove edge of the second notch 1132; the second insulating patch 152, the second connecting piece 122 and the second groove edge form a first flow channel of the electrolyte. By forming a gap between the second connecting piece 122 and the lower plastic 112, a second gap 1132 is formed on one side of the second boss 1122 close to the second connecting piece 122, and the second insulating patch 152 covers the second connecting piece 122, so that the second insulating patch 152, the second connecting piece 122 and the second groove edge enclose to form a first channel of electrolyte; when electrolyte is filled into the case 140 through the filling hole 1170, a part of the electrolyte may flow along the gap between the second insulating patch 152 and the second connecting piece 122 and the lower plastic 112, and then the electrolyte may flow out through the second notch 1132 of the second boss 1122, and then flow toward the electrode assembly 130, so as to guide the electrolyte, so that the electrolyte may sufficiently flow toward each part of the electrode assembly 130.
Reinforcing ribs 1190 extending toward one side of the electrode assembly 130 are formed on two sides of the lower plastic 112 in the width direction Y, a gap is formed between the second connecting sheet 122 and the reinforcing ribs 1190 in the width direction Y of the lower plastic 112, and a gap is formed between the second insulating patch 152 at least partially located on the second transition portion 1221 and the reinforcing ribs 1190 in the width direction Y of the lower plastic 112; the second insulating patch 152, the second connecting tab 122, and the rib 1190 enclose a second flow channel for electrolyte, and the electrolyte enters the filling hole 1170 and can flow to the electrode assembly 130 through the second flow channel. The second insulating patch 152, the second connecting sheet 122 and the reinforcing ribs 1190 are enclosed to form a second flow channel for electrolyte, when the electrolyte is filled into the housing 140 through the electrolyte filling hole 1170, the second insulating patch 152 covers the second connecting sheet 122, so that part of the electrolyte flows along the second insulating patch 152 and the gaps between the second connecting sheet 122 and the lower plastic 112, and then the electrolyte can flow out through the gaps between the second connecting sheet 122 and the reinforcing ribs 1190 and further flow to the electrode assembly 130, so that the electrolyte is guided, and the second flow channel is matched with the first flow channel, so that the electrolyte can sufficiently flow to each part of the electrode assembly 130.
As shown in fig. 5 and 9, the second connecting piece 122 includes a second pole connecting portion 1224, a second transition portion 1221, and two second pole lug connecting portions 1222, and the second pole connecting portion 1224 is connected to the two second pole lug connecting portions 1222 through the second transition portion 1221; the second pole lug connection 1222 is located on a side of the second transition portion 1221 facing away from the second notch 1132, and the two second pole lug connections 1222 are spaced apart in the width direction Y of the second connecting piece 122, and the second insulation patch 152 completely covers an area between the two second pole lug connections 1222. The second insulating patch 152 completely covers the area between the two second pole tab connecting portions 1222, so that part of the electrolyte flowing in through the through hole 1180 flows toward the gap between the second connecting piece 122 and the lower plastic 112 under the flow guiding action of the second insulating patch 152, and further flows into the electrode assembly 130 through the first flow channel and the second flow channel.
Further, as shown in fig. 5 and 9, the second connecting piece 122 further includes a second protrusion 1223, the second protrusion 1223 is located on a side of the second transition portion 1221 facing the second notch 1132, and at least a portion of the second protrusion 1223 is located in the second notch 1132. By arranging the second protruding portion 1223, when the second connecting piece 122 is laser-welded with the second pole post 1152 through the second pole post connecting portion 1224, a welding tip which is convenient for laser welding through the second protruding portion 1223 abuts against a side edge of one side of the second protruding portion 1223 arranged on the second connecting piece 122, and an avoiding space is provided for the welding tip to abut against the second protruding portion 1223 through the second notch 1132, so that the stability of laser welding between the second connecting piece 122 and the second pole post 1152 is improved, and the efficiency and yield of laser welding between the second connecting piece 122 and the second pole post 1152 are improved; after the second connecting piece 122 is connected with the second pole 1152, and powered on, the second protruding portion 1223 may provide an additional current flowing path when the current is too large, so that the current carrying capacity of the second connecting piece 122 is improved, and thus the stability and the safety of the energy storage device are improved.
As shown in fig. 5 and 6, in the length direction X of the lower plastic 112, a gap is formed between the second transition portion 1221 and the second boss 1122, and the second insulation patch 152 covers the gap. By having a gap between the second transition portion 1221 and the second boss 1122 and covering the gap with the second insulating patch 152, the electrolyte of the first flow channel flows into the electrode assembly 130 through the second gap 1132; in addition, when the second insulation patch 152 covers the gap, at least a part of the second insulation patch 152 covers the edge of the second boss 1122, so that the second pole ear can be prevented from being scratched by the edge of the second boss 1122.
As shown in fig. 6, in the length direction X of the lower plastic 112, the second insulating patch 152 covers the second protrusion 1223 and at least a portion of the second notch 1132. The second lug boss 1223 is covered by the second insulating patch 152, and the second connecting sheet 122 is completely covered by the second insulating patch 152, so that the insulating effect of the second connecting sheet 122 is formed, and short circuit caused by contact between the second connecting sheet 122 and a pole piece in a bare cell is avoided; meanwhile, the second insulation patch 152 is coated on at least part of the second notch 1132, so that the electrolyte needs to flow out of the second notch 1132 through the first arc segment 1141 and the fourth arc segment 1144, and the flow rate of the electrolyte is relatively improved through the first arc segment 1141 and the fourth arc segment 1144.
Wherein at least a portion of the second insulation patch 152 covers a side of the second boss 1122 facing the electrode assembly 130, as shown in fig. 6. By covering at least a portion of the second insulation patch 152 on the side of the second boss 1122 facing the electrode assembly 130, the adhesion of the second insulation patch 152 is improved when the second insulation patch 152 covers the gap between the second transition portion 1221 and the second boss 1122 and a portion of the second gap 1132, and the second insulation patch 152 is prevented from falling off.
The second insulating patch 152 also covers the first bare cell second pole piece 1312 and at least part of the first bare cell 1310, which are connected to the second pole piece connecting portion 1222, and the second bare cell second pole piece 1322 and at least part of the second bare cell 1320. Through making the second insulation paster 152 still cover the first naked electric core second pole ear 1312 and at least partial first naked electric core 1310 of being connected with second pole ear connecting portion 1222, and the naked electric core second pole ear 1322 of second and at least partial second naked electric core 1320, make the second insulation paster 152 cover second connection piece 122 and first naked electric core second pole ear 1312 and the naked electric core second pole ear 1322 of second completely, avoid welding slag to fall into and cause the short circuit in the naked electric core, still improved the stability after first utmost point ear connecting portion 1212 and first naked electric core second pole ear 1312 and the naked electric core second pole ear 1322 welding simultaneously.
Wherein, the second insulating patch 152 is formed by connecting a plurality of sub-insulating patches, the plurality of sub-insulating patches cover the second connecting sheet 122, the first naked electric core 1310, the first naked electric core second polar ear 1312, the different areas of the naked electric core 1320 and the naked electric core second polar ear 1322 of second respectively, an overlapping area is provided between the adjacent sub-insulating patches, the process difficulty when the second insulating patch 152 is bonded is reduced, the bonding strength of the second insulating patch 152 in different areas is improved, and the manufacturing difficulty and the cost of the second insulating patch 152 are also reduced.
Wherein, the second notch 1132 further includes: at least one of a first straight line segment 1145, a second straight line segment 1146, and a third straight line segment 1147, the first straight line segment 1145 connected between a first arc segment 1141 and a second arc segment 1142, the second straight line segment 1146 connected between a third arc segment 1143 and a fourth arc segment 1144, and the third straight line segment 1147 connected between a second arc segment 1142 and a third arc segment 1143. The first straight line segment 1145 is connected between the first arc segment 1141 and the second arc segment 1142, the second straight line segment 1146 is connected between the third arc segment 1143 and the fourth arc segment 1144, and the third straight line segment 1147 is connected between the second arc segment 1142 and the third arc segment 1143, so that the corner of the second notch 1132 is a fillet, and the flow rate of the electrolyte flowing through the notch is increased.
The included angle between the first straight line segment 1145 and the third straight line segment 1147 is an obtuse angle. The included angle between the first straight line segment 1145 and the third straight line segment 1147 is an obtuse angle, that is, the opening of the second notch 1132 is relatively enlarged, so that the electrolyte can further conveniently flow into the gap between the second protrusion 1223 and the second notch 1132, the radian of the corner of the first straight line segment 1145 and the third straight line segment 1147 can be increased, the flow rate of the electrolyte at the first straight line segment 1145 and the third straight line segment 1147 can be further increased, and the electrolyte can more quickly flow into the electrode assembly 130. Of course, the angle between first straight segment 1145 and third straight segment 1147 may also be a right angle.
The included angle between the second straight line segment 1146 and the third straight line segment 1147 is an obtuse angle. By making the included angle between the second straightway section 1146 and the third straightway section 1147 obtuse, i.e. making the opening of the second notch 1132 relatively larger, the electrolyte can further flow into the gap between the second protrusion 1223 and the second notch 1132, and the radian of the rotation angle of the second straightway section 1146 and the third straightway section 1147 can be increased, so that the flow rate of the electrolyte at the second straightway section 1146 and the third straightway section 1147 can be further increased, and the electrolyte can flow into the electrode assembly 130 more quickly. Of course, the angle between second straight section 1146 and third straight section 1147 may be a right angle.
Wherein the radian of the first arc segment 1141 is
E.g. of
、
、
And the like. By making the arc of the first arc segment 1141 be
It is advantageous to provide a flow of the electrolyte at the first arc segment 1141, which facilitates the formation of the second gap 1132. Of course, the arc of the first arc segment 1141 may be less than
Or greater than
This is not limited by the present application.
Wherein the radian of the fourth arc segment 1144 is
E.g. of
、
、
And the like. By making the arc of the first arc segment 1141 be
The flow of the electrolyte at the fourth arc segment 1144 is advantageously provided to facilitate the formation of the second notch 1132. Of course, the arc of the fourth arc segment 1144 may be less than
Or greater than
This is not limited by the present application. The radian of the first arc segment 1141 and the radian of the fourth arc segment 1144 can be the same or different.
The arc radius of the first arc segment 1141 is 1mm to 3mm, such as 1.0mm, 1.5mm, 2.0mm, 2.5mm, 3.0mm, etc., which are not listed herein; the arc radius of the first arc segment 1141 is 1mm to 3mm, so that the first arc segment 1141 can meet the requirement of improving the flow rate of the electrolyte. Of course, the arc radius of the first arc segment 1141 may be less than 1mm or greater than 3mm.
The arc radius of the fourth arc segment 1144 is 1mm to 3mm, such as 1.0mm, 1.5mm, 2.0mm, 2.5mm, 3.0mm, etc., which are not listed herein; the arc radius of the fourth arc segment 1144 is 1mm to 3mm, so that the first arc segment 1141 can meet the requirement of improving the flow rate of the electrolyte. Of course, the arc radius of the fourth arc segment 1144 may be less than 1mm or greater than 3mm. The arc radius of the first arc segment 1141 and the arc radius of the fourth arc segment 1144 may be the same or different.
Wherein the radian of the second arc segment 1142 is
E.g. of
、
、
And the like. By making the arc of the second arc segment 1142 be
The flow of the electrolyte at the second arc segment 1142 is advantageously provided, which facilitates the formation of the second notch 1132. Of course, the second arc segment 1142 may have an arc less than
Or greater than
This is not limited by the present application.
Wherein the radian of the third arc segment 1143 is
E.g. of
、
、
And so on. By making the arc of the second arc segment 1142 be
The flow of the electrolyte at the third arc segment 1143 is advantageously provided, which facilitates the formation of the second notch 1132. Of course, the arc of the third arc segment 1143 may be less than
Or greater than
This is not a limitation of the present application. The radian of the second arc segment 1142 can be the same as or different from the radians of the first arc segment 1141, the third arc segment 1143 and the fourth arc segment 1144.
The arc radius of the second arc segment 1142 is 1mm to 3mm, such as 1.0mm, 1.5mm, 2.0mm, 2.5mm, 3.0mm, etc., which are not listed herein; the arc radius of the second arc segment 1142 is 1mm to 3mm, so that the second arc segment 1142 can meet the requirement of improving the flow rate of the electrolyte. Of course, the arc radius of the second arc segment 1142 may be less than 1mm or greater than 3mm.
The arc radius of the third arc segment 1143 is 1mm to 3mm, such as 1.0mm, 1.5mm, 2.0mm, 2.5mm, 3.0mm, etc., which are not listed herein; the arc radius of the third arc segment 1143 is 1mm to 3mm, so that the second arc segment 1142 can meet the requirement of improving the flow rate of the electrolyte. Of course, the arc radius of the third arc segment 1143 may be less than 1mm or greater than 3mm. The arc radius of the second arc segment 1142 may be the same as or different from the arc radii of the first arc segment 1141, the third arc segment 1143 and the fourth arc segment 1144.
In the width direction of the lower plastic 112, the width of the second notch 1132 is 40% to 60% of the width of the second boss 1122, for example, 40%, 45%, 50%, 55%, 60%, and the like, which are not listed herein. Guarantee to have sufficient clearance between second breach 1132 and the second bellying 1223, the flow of the electrolyte of being convenient for, the butt of the tip on second connection piece 122 of being convenient for simultaneously forms sufficient space of dodging. Of course, the width of the second notch 1132 may also be less than 40% of the width of the second boss 1122 or greater than 60% of the width of the second boss 1122, which is not limited in this application.
Wherein, the length of the lower plastic 112 can be 250mm to 280mm, such as 250mm, 260.88mm, 270mm, 280mm, etc.; the width of the lower plastic 112 can be 50mm to 60mm, such as 50mm, 52mm, 53mm, 58.08mm, 60mm and the like; the maximum width of the second boss 1122 is the same as the width of the lower plastic 112, and the thickness of the second boss 1122 may be 2mm to 3mm, such as 2.0mm, 2.2mm, 2.58mm, 2.8mm, 3.0mm, and the like; the length of the second boss 1122 can be 15mm to 25mm, for example, 15mm, 18mm, 20mm, 22mm, 25mm, and the like, which is the maximum length of the second boss 1122.
The width of the second notch 1132 is 25mm to 30mm, for example, 25mm, 26mm, 27mm, 28.13mm, 29mm, and 30mm, which is not specifically mentioned here, and when the second notch 1132 has a non-uniform width structure in the depth direction, the width is the maximum width of the second notch 1132. Guarantee to have sufficient clearance between second breach 1132 and the second bellying 1223, the flow of the electrolyte of being convenient for, the butt of the tip on second connection piece 122 of being convenient for simultaneously forms sufficient space of dodging. Of course, the width of the second notch 1132 may also be less than 25mm or greater than 30mm, which is not limited in this application.
In the length direction X of the lower plastic 112, the depth of the second notch 1132 is 20% to 30% of the length of the second boss 1122, for example, 20%, 22%, 25%, 28%, 30%, etc., which is not listed here. Guarantee to have sufficient clearance between second breach 1132 and the second bellying 1223, the flow of the electrolyte of being convenient for, the butt of the tip on second connection piece 122 of being convenient for simultaneously forms sufficient space of dodging. Of course, the depth of the second notch 1132 may also be less than 20% of the length of the second boss 1122 or greater than 30% of the length of the second boss 1122, which is not limited in this application.
The depth of the second notch 1132 is 3mm to 6mm, such as 3.0mm, 3.5mm, 4.0mm, 4.5mm, 5.0mm, 5.5mm, and 6.0mm, which are not listed here. Guarantee to have sufficient clearance between second breach 1132 and the second bellying 1223, the flow of the electrolyte of being convenient for, the butt of the tip on second connection piece 122 of being convenient for simultaneously forms sufficient space of dodging. Of course, the depth of the second notch 1132 may also be less than 3mm or greater than 6mm, which is not limited in this application.
The second bosses 1122 are symmetrical with respect to a central axis of the lower plastic 112 in the length direction X. Through the axis symmetry that makes second boss 1122 about the length direction X of top cap 111, then second boss 1122 is symmetrical structure, second breach 1132 is symmetrical structure, first arc line segment 1141 and fourth arc line segment 1144 are symmetrical, second arc line segment 1142 and third arc line segment 1143 are symmetrical, make electrolyte flow into in the clearance between second bellying 1223 and the second breach 1132 uniformly from the both sides on the lower plastic 112 width direction Y, thereby further make electrolyte flow into naked electric core 1132 uniformly.
The second protrusion 1223 includes a top surface facing the second notch 1132, and a first side surface and a second side surface located on two sides of the top surface in the width direction of the second connecting piece 122, where the top surface, the first side surface and the second side surface are planes, the top surface is perpendicular to the length direction X of the lower plastic 112, and an included angle between the first side surface and the top surface is a right angle or an obtuse angle. When the included angle between the side surface and the top surface of the second protruding portion 1223 is a right angle, the orthographic projections of the second protruding portion 1223 on the lower plastic 112 are all rectangular; when the included angle between the side surface and the top surface of the second protruding portion 1223 is an obtuse angle, the orthographic projections of the second protruding portion 1223 on the lower plastic 112 are all trapezoidal; of course, the included angle between the side surface and the top surface of the second protruding portion 1223 may also be an acute angle, and the first side surface and the second side surface of the second protruding portion 1223 may also be an arc surface or a concave-convex surface, which is not limited in this application.
Wherein, the top surface of the second protruding portion 1223 is disposed opposite to the third straight-line segment 1147 and has a first predetermined gap, the first predetermined gap is 2mm to 5mm, for example, 2mm, 3mm, 4mm, 5mm, etc., which is not listed herein; the first side surface of the second protrusion 1223 is disposed opposite to the first straight line 1145 and has a second predetermined gap, where the second predetermined gap is 3mm to 10mm, for example, 3mm, 5mm, 8mm, 10mm, and the like, which is not listed herein; the second side surface of the second protruding portion 1223 is disposed opposite to the second straight line segment 1146 and has a third predetermined gap, where the third predetermined gap is 3mm to 10mm, for example, 3mm, 5mm, 8mm, 10mm, and the like, which is not listed herein. Through having the predetermined clearance between the lateral wall that makes second bellying 1223 and second breach 1132 opposite directions, form the export of first runner between second bellying 1223 and second breach 1132, realize the purpose that electrolyte flows in naked electric core through first runner.
In the width direction Y of the second connecting piece 122, the width of the second protruding portion 1223 is 20% to 50% of the width of the second transition portion 1221, for example, 20%, 25%, 30%, 35%, 40%, 45%, 50%, and the like, which is not specifically mentioned herein, and the specific width of the second protruding portion 1223 may be set according to the specific size of the second connecting piece 122. By making the width of the second protruding portion 1223 20% to 50% of the width of the second transition portion 1221, the second protruding portion 1223 can have a sufficient width to facilitate the abutment of the welding tip, so that the second protruding portion 1223 can provide an additional current flowing path; meanwhile, the second notch 1132 is prevented from being too wide, which causes the area of the second boss 1122 to be too small. Of course, the width of the second protruding portion 1223 may also be less than 20% of the width of the second transition portion 1221, or the width of the second protruding portion 1223 may be greater than 50% of the width of the second transition portion 1221, which is not limited in this application.
In the length direction X of the second connecting piece 122, the length of the second protruding portion 1223 is 10% to 30% of the length of the second transition portion 1221, for example, 10%, 15%, 20%, 25%, 30%, etc., which is not specifically mentioned herein, and the specific length of the second protruding portion 1223 may be set according to the specific size of the second connecting piece 122. By making the length of the second protruding portion 1223 10% to 30% of the length of the second transition portion 1221, the second protruding portion 1223 can have a sufficient length, so that the abutment of the welding tip is not affected by the welding position of the second pole connecting portion 1224, and the second protruding portion 1223 can provide an additional current flow path; while the second notch 1132 can be prevented from being too deep in the length direction X of the top cover 111.
The second protruding portion 1223 is symmetrical with respect to a central axis of the second connecting piece 122 in the length direction X, that is, the second protruding portion 1223 is located at a middle position of the second connecting piece 122 in the width direction Y of the second connecting piece 122. The second pole connecting portion 1224 is located in a middle region of the second transition portion 1221, and the second protruding portion 1223 is located in a middle position of the second connecting piece 122, so that the welding tip abuts against the second connecting piece 122.
Wherein the shape of the second protrusion 1223 matches the shape of the second notch 1132. For example, the orthographic projections of the second protrusion 1223 and the second notch 1132 on the lower plastic 112 are both rectangular, or the orthographic projections of the second protrusion 1223 and the second notch 1132 on the lower plastic 112 are both trapezoidal, and so on. Of course, the shape of the second protrusion 1223 may not match the shape of the second notch 1132, for example, the second protrusion 1223 is rectangular, and the second notch 1132 is semicircular, which is not limited in this application.
As shown in fig. 5, the first bosses 1121 and the second bosses 1122 are symmetrically disposed on the top cover 111, and the shapes and sizes of the first bosses 1121 and the second bosses 1122 may be completely the same.
Specifically, the first connecting sheet 121 is an anode connecting sheet, the first tab of the bare cell is an anode tab, and the first pole 1151 is an anode pole; second connection piece 122 is the negative pole connection piece, and the second utmost point ear of naked electric core is the negative pole utmost point ear, and second utmost point post 1152 is the negative pole utmost point post. Or, the first connecting sheet 121 is a negative connecting sheet, the first tab of the bare cell is a negative tab, and the first pole 1151 is a negative pole; second connection piece 122 is the positive connection piece, and the second utmost point ear of naked electric core is anodal utmost point ear, and second utmost point post 1152 is anodal utmost point post.
The positive connecting piece can be made of aluminum material, and the negative connecting piece can be made of copper material.
As shown in fig. 5, the first connecting piece 121 and the second connecting piece 122 may be symmetrically disposed on the top cover 111, and the first connecting piece 121 and the second connecting piece 122 may be completely symmetrical in shape and size. Of course, the structure of the first connecting piece 121 and the structure of the second connecting piece 122 may be different, or only the second protruding portion 1223 on the first connecting piece 121 and the second protruding portion 1223 on the second connecting piece 122 may have the same structure.
The first connecting piece 121 and the second connecting piece 122 can be respectively provided with a positioning hole or a positioning groove, the lower plastic 112 is provided with a positioning protrusion, and the first connecting piece 121 and the second connecting piece 122 can be quickly positioned on the lower plastic 112 by matching the positioning protrusion with the positioning hole or the positioning groove, so that the position deviation of the first connecting piece 121 and the second connecting piece 122 on the lower plastic 112 is avoided.
Wherein, the insulating patch 150 is, for example, an insulating tape; of course, the insulating patch 150 may also be other functional films having the functions of adhesion and insulation, which is not limited in this application.
Specifically, as shown in fig. 4, the top cover 111 is further provided with an explosion-proof valve 1160, so that high-temperature and high-pressure gas generated in the housing 140 can be discharged in time through the explosion-proof valve 1160.
The energy storage device provided by the application can be a single battery or a battery module comprising a plurality of single batteries.
Embodiments of the present application also provide a powered device including the energy storage device described above, which may be, for example, a vehicle 20 shown in fig. 10. According to the electric equipment provided by the application, a gap is formed between the connecting sheet and the lower plastic in the energy storage device, a notch is formed in one side, close to the connecting sheet, of the boss, and the insulating patch covers the connecting sheet and the through hole, so that the insulating patch, the connecting sheet and the groove edge are enclosed to form a first flow channel of electrolyte; when electrolyte is filled into the shell through the liquid filling hole, the insulating patch covers the connecting sheet and the through hole, so that the electrolyte flows along a gap between the insulating patch and the lower plastic, and then the electrolyte can flow out through the notch of the boss and further flow to the electrode assembly, so that the flow guide of the electrolyte is realized, and the electrolyte can fully flow to each part of the electrode assembly; the groove edge of the notch is formed by the first arc line segment, the second arc line segment, the third arc line segment and the fourth arc line segment, so that the corner of the notch of the boss is a round angle, and when electrolyte flows through the notch, the flow speed of the electrolyte at the corner of the notch is high, so that the electrolyte can flow into the electrode assembly more quickly and more smoothly; simultaneously, set up the corner of breach into the fillet, can avoid the corner fish tail utmost point ear of breach, improved energy memory's reliability, and then improved consumer's reliability.
In the examples of this application, the term "plurality" means two or more unless explicitly defined otherwise. The term "connected" is used in a broad sense, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection. The specific meanings of the above terms in the examples of the application can be understood by those skilled in the art according to specific situations.
In the description of the embodiments of the present application, it is to be understood that the terms "upper", "lower", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred devices or units must have a specific direction, be configured and operated in a specific orientation, and thus, should not be construed as limiting the embodiments of the present application.
In the description of the present specification, the description of "one embodiment" or "an embodiment" means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the embodiments of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only a preferred embodiment of the claimed embodiments and is not intended to limit the claimed embodiments, and various modifications and changes may be made to the claimed embodiments by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the applied embodiment shall be included in the protection scope of the applied embodiment.
Claims (20)
1. An energy storage device, comprising:
a case having an opening, accommodating an electrolyte;
an electrode assembly accommodated in the case;
the top cover covers the opening and is provided with a liquid injection hole;
the lower plastic is provided with a through hole and is arranged on one side, close to the electrode assembly, of the top cover, the lower plastic comprises a plurality of bosses which are arranged at intervals in the length direction of the lower plastic, the plurality of bosses at least comprise first bosses and second bosses, the first bosses and the second bosses are respectively positioned at two ends of the length direction of the lower plastic, the plurality of bosses are positioned on one side, facing the electrode assembly, of the lower plastic, and the through hole is communicated with the liquid injection hole;
the connecting piece is arranged on one side, facing the electrode assembly, of the lower plastic, and a gap is formed between at least part of the connecting piece and the lower plastic in the thickness direction of the connecting piece;
the insulating patch is attached to one side, facing the electrode assembly, of the connecting sheet and covers the connecting sheet and the through hole;
the first boss and the second boss are respectively provided with a notch at one side close to the connecting piece, the notches comprise a first arc segment, a second arc segment, a third arc segment and a fourth arc segment which are sequentially arranged along the width direction of the lower plastic, the first arc segment is connected with the second arc segment, the third arc segment is connected with the fourth arc segment, the second arc segment is connected with the third arc segment, the first arc segment is closer to the through hole relative to the second arc segment, the fourth arc segment is closer to the through hole relative to the third arc segment, and the first arc segment, the second arc segment, the third arc segment and the fourth arc segment form a groove edge of the notch; the insulating patch, the connecting sheet and the groove edge enclose to form a first flow channel of the electrolyte, and the electrolyte enters the electrolyte injection hole and can flow to the electrode assembly through the first flow channel.
2. The energy storage device of claim 1, wherein the lower plastic is formed with reinforcing ribs extending toward one side of the electrode assembly on both sides in the width direction, the connecting sheet and the reinforcing ribs have a gap in the width direction of the lower plastic, and the insulating patch at least partially positioned on the connecting sheet and the reinforcing ribs have a gap in the width direction of the lower plastic; the insulating patch, the connecting sheet and the reinforcing ribs enclose to form a second flow channel of the electrolyte, and the electrolyte enters the electrolyte injection hole and can flow to the electrode assembly through the second flow channel.
3. The energy storage device of claim 1, wherein the connecting tab comprises a pole connecting portion, a transition portion and two pole tab connecting portions, and the pole connecting portion is connected with the two pole tab connecting portions through the transition portion; the two tab connecting portions are located on one side, away from the notch, of the transition portion, the two tab connecting portions are distributed at intervals in the width direction of the connecting sheet, the through hole is located between the two tab connecting portions, and the insulating patch completely covers the area between the two tab connecting portions.
4. The energy storage device of claim 3, wherein the tab further comprises a projection on a side of the transition portion facing the notch, at least a portion of the projection being located in the notch.
5. The energy storage device as claimed in claim 4, wherein a gap is formed between the transition portion and the boss in a length direction of the lower plastic, and the insulation patch covers the gap.
6. The energy storage device as claimed in claim 4, wherein the insulating patch covers the protrusion and at least a portion of the notch along the length of the lower plastic.
7. The energy storage device of claim 6, wherein at least a portion of the insulating patch overlies a side of the boss facing the electrode assembly.
8. The energy storage device of claim 1, wherein the electrode assembly comprises a bare cell and a tab connected to the bare cell, the tab is connected to the connection tab, and the insulation patch further completely covers the tab and at least part of the bare cell.
9. The energy storage device of claim 1, wherein the dielectric patch comprises a plurality of sub-dielectric patches, and adjacent sub-dielectric patches have an overlapping region therebetween.
10. The energy storage device of claim 1, wherein said gap further comprises: at least one of a first straight line segment, a second straight line segment and a third straight line segment, wherein the first straight line segment is connected between the first arc segment and the second arc segment, the second straight line segment is connected between the third arc segment and the fourth arc segment, and the third straight line segment is connected between the second arc segment and the third arc segment.
11. The energy storage device of claim 1, wherein said first arc segment has an arc of
~
And/or the arc of said fourth arc segment is
。
12. The energy storage device as claimed in claim 1 or 11, wherein the arc radius of the first arc segment is 1mm to 3mm, and/or the arc radius of the fourth arc segment is 1mm to 3mm.
13. The energy storage device of claim 1, wherein said second arc segment has an arc of
And/or the arc of said third arc segment is
。
14. The energy storage device as claimed in claim 1 or 13, wherein the arc radius of the second arc segment is 1mm to 3mm, and/or the arc radius of the third arc segment is 1mm to 3mm.
15. The energy storage device of claim 1, wherein the width of the notch is 40% -60% of the width of the boss in the width direction of the lower plastic.
16. The energy storage device as claimed in claim 1 or 15, wherein the width of the gap in the width direction of the lower plastic is 25mm to 30mm.
17. The energy storage device of claim 1, wherein the depth of the notch is 20% to 30% of the length of the boss in the length direction of the lower plastic.
18. The energy storage device of claim 1 or 17, wherein the notch has a depth of 3mm to 6mm in the length direction of the lower plastic.
19. The energy storage device of claim 4, wherein said gap further comprises: the first straight line section is connected between the first arc line section and the second arc line section, the second straight line section is connected between the third arc line section and the fourth arc line section, and the third straight line section is connected between the second arc line section and the third arc line section;
the protruding portion comprises a top surface facing the notch, a first side surface and a second side surface, wherein the first side surface and the second side surface are located on two sides of the top surface in the width direction of the connecting sheet; the first preset gap is from 2mm to 5mm, the second preset gap is from 3mm to 10mm, and the third preset gap is from 3mm to 10mm.
20. An electric device, characterized by comprising the energy storage device according to any one of claims 1 to 19.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211414921.3A CN115579597B (en) | 2022-11-11 | 2022-11-11 | Energy storage device and electric equipment |
| US18/113,396 US11784381B1 (en) | 2022-11-11 | 2023-02-23 | Energy storage device and electrical apparatus |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211414921.3A CN115579597B (en) | 2022-11-11 | 2022-11-11 | Energy storage device and electric equipment |
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| CN115579597A CN115579597A (en) | 2023-01-06 |
| CN115579597B true CN115579597B (en) | 2023-03-24 |
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| CN116014390B (en) * | 2023-02-09 | 2023-06-13 | 深圳海润新能源科技有限公司 | Energy storage device and electric equipment |
| CN115939692B (en) * | 2023-02-09 | 2023-05-23 | 深圳海润新能源科技有限公司 | Lower plastic assembly, end cover assembly, energy storage device and electric equipment |
| CN116014389B (en) * | 2023-02-09 | 2023-06-30 | 深圳海润新能源科技有限公司 | Energy storage device and electric equipment |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206878046U (en) * | 2016-12-02 | 2018-01-12 | 宁德时代新能源科技股份有限公司 | Secondary cell |
| EP3331051A1 (en) * | 2016-12-02 | 2018-06-06 | Contemporary Amperex Technology Co., Limited | Top cover assembly for power battery and power battery having the same |
| WO2018177137A1 (en) * | 2017-03-31 | 2018-10-04 | 比亚迪股份有限公司 | Battery cover assembly, single-cell battery, battery module, power battery pack, and electric vehicle |
| CN210073933U (en) * | 2019-08-08 | 2020-02-14 | 合肥力翔电池科技有限责任公司 | Rectangular structure top cover of non-polar column |
| CN213150888U (en) * | 2020-09-21 | 2021-05-07 | 江苏塔菲尔新能源科技股份有限公司 | Battery top cap and battery |
| CN213401338U (en) * | 2020-10-23 | 2021-06-08 | 东莞塔菲尔新能源科技有限公司 | Power battery top cover structure and power battery |
| CN215418522U (en) * | 2021-07-29 | 2022-01-04 | 蜂巢能源科技有限公司 | Top cover assembly and lithium battery |
| CN216450732U (en) * | 2021-10-18 | 2022-05-06 | 厦门海辰新能源科技有限公司 | Cover body assembly of battery and battery |
| WO2022121244A1 (en) * | 2020-12-10 | 2022-06-16 | 厦门海辰新能源科技有限公司 | Lower plastic and power battery |
| CN216958265U (en) * | 2022-03-23 | 2022-07-12 | 中创新航科技股份有限公司 | Battery cover plate assembly, battery and battery pack |
| CN217086732U (en) * | 2022-04-20 | 2022-07-29 | 中创新航科技股份有限公司 | Battery cover plate assembly and battery |
| CN217468721U (en) * | 2022-02-28 | 2022-09-20 | 瑞浦兰钧能源股份有限公司 | Battery top cap and battery |
| JP2022138491A (en) * | 2021-03-10 | 2022-09-26 | プライムプラネットエナジー＆ソリューションズ株式会社 | Secondary battery and manufacturing method thereof |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101023878B1 (en) * | 2008-06-16 | 2011-03-22 | 삼성에스디아이 주식회사 | Rechargeable battery |
| CN207800664U (en) * | 2018-02-01 | 2018-08-31 | 宁德时代新能源科技股份有限公司 | Cap assembly and power battery |
| CN114497836A (en) | 2020-10-26 | 2022-05-13 | 昆山聚创新能源科技有限公司 | Full utmost point ear top cap subassembly and full utmost point ear battery |
| JP2023527512A (en) * | 2021-04-02 | 2023-06-29 | 寧徳時代新能源科技股▲分▼有限公司 | END CAP ASSEMBLY, BATTERY CELL, METHOD AND APPARATUS FOR BATTERY AND BATTERY CELL |
| CN217361843U (en) | 2022-01-26 | 2022-09-02 | 上海兰钧新能源科技有限公司 | Battery connecting device with limiting connecting sheet |
| CN217641706U (en) | 2022-04-25 | 2022-10-21 | 天津市捷威动力工业有限公司 | Lower plastic structure, top cap subassembly and power battery |
| CN217134507U (en) | 2022-06-07 | 2022-08-05 | 宁德时代新能源科技股份有限公司 | Battery cell, battery and power consumption device |
-
2022
- 2022-11-11 CN CN202211414921.3A patent/CN115579597B/en active Active
-
2023
- 2023-02-23 US US18/113,396 patent/US11784381B1/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3331051A1 (en) * | 2016-12-02 | 2018-06-06 | Contemporary Amperex Technology Co., Limited | Top cover assembly for power battery and power battery having the same |
| CN206878046U (en) * | 2016-12-02 | 2018-01-12 | 宁德时代新能源科技股份有限公司 | Secondary cell |
| WO2018177137A1 (en) * | 2017-03-31 | 2018-10-04 | 比亚迪股份有限公司 | Battery cover assembly, single-cell battery, battery module, power battery pack, and electric vehicle |
| CN210073933U (en) * | 2019-08-08 | 2020-02-14 | 合肥力翔电池科技有限责任公司 | Rectangular structure top cover of non-polar column |
| CN213150888U (en) * | 2020-09-21 | 2021-05-07 | 江苏塔菲尔新能源科技股份有限公司 | Battery top cap and battery |
| CN213401338U (en) * | 2020-10-23 | 2021-06-08 | 东莞塔菲尔新能源科技有限公司 | Power battery top cover structure and power battery |
| WO2022121244A1 (en) * | 2020-12-10 | 2022-06-16 | 厦门海辰新能源科技有限公司 | Lower plastic and power battery |
| JP2022138491A (en) * | 2021-03-10 | 2022-09-26 | プライムプラネットエナジー＆ソリューションズ株式会社 | Secondary battery and manufacturing method thereof |
| CN215418522U (en) * | 2021-07-29 | 2022-01-04 | 蜂巢能源科技有限公司 | Top cover assembly and lithium battery |
| CN216450732U (en) * | 2021-10-18 | 2022-05-06 | 厦门海辰新能源科技有限公司 | Cover body assembly of battery and battery |
| CN217468721U (en) * | 2022-02-28 | 2022-09-20 | 瑞浦兰钧能源股份有限公司 | Battery top cap and battery |
| CN216958265U (en) * | 2022-03-23 | 2022-07-12 | 中创新航科技股份有限公司 | Battery cover plate assembly, battery and battery pack |
| CN217086732U (en) * | 2022-04-20 | 2022-07-29 | 中创新航科技股份有限公司 | Battery cover plate assembly and battery |
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|---|---|
| US11784381B1 (en) | 2023-10-10 |
| CN115579597A (en) | 2023-01-06 |
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Address after: Room 501, R&D Building, No. 2 Sany Yundu, No. 6 Lanqing Second Road, Luhu Community, Guanhu Street, Longhua District, Shenzhen City, Guangdong Province, 518110 Patentee after: Shenzhen Haichen Energy Storage Technology Co.,Ltd. Patentee after: Xiamen Haichen Energy Storage Technology Co.,Ltd. Address before: Room 501, R&D Building, No. 2 Sany Yundu, No. 6 Lanqing Second Road, Luhu Community, Guanhu Street, Longhua District, Shenzhen City, Guangdong Province, 518110 Patentee before: Shenzhen Haichen Energy Storage Control Technology Co.,Ltd. Patentee before: Xiamen Haichen Energy Storage Technology Co.,Ltd. |